In Case You Didn’t Know: Vegetable Oils are Bad. Bad News. Bad for Your Health. Bad for the Environment. Just Bad. I get a lot of questions about what fats and oils I use for cooking. It makes sense; after all there is a lot of confusion about fat in general. And with the increasing hype over “heart healthy” vegetable oils and their sky-rocketed consumption level, it’s no wonder people have questions about these highly over-recommended products. So let’s talk vegetable oils today: What are they? Why do I avoid them? And what are the best fats for cooking? Ready? Let’s do this.